Often when I'm using iTunes 10.4, the menubar will hide and show like the dock does when you set it that way. I don't know of any settings that allow for that to happen on the menubar. Is it a bug or ...
I'm trying to keep my dock simple - just Chrome, MacVim, and the terminal. Is there a way to run iTunes without it being in the dock (i.e. just show the icon in the menu bar)?